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Table 6 Summary of recent studies using multivariate logistic regression to compare helicopter versus ground emergency medical services a

From: Association between helicopter with physician versus ground emergency medical services and survival of adults with major trauma in Japan

Study

Number of patients

OR (95% CI) for HEMS survival

Thomas et al. [7]

  

 HEMS

2,292

1.32 (1.03 to 1.71)

 GEMS

14,407

 

Brown et al. [8]

 

1.22 (1.18 to 1.27)

 HEMS

41,987

 

 GEMS

216,400

 

Stewart et al. [9]

  

 HEMS

2,739

1.49 (1.19 to 1.89)

 GEMS

6,473

 

Sullivant et al. [10]

  

 HEMS

10,049

1.64 (1.45 to 1.87)

 GEMS

46,695

 

Galvagno et al. [2]

  

 HEMS

47,637

1.16 (1.14 to 1.17)

 GEMS

111,874

 

Andruszkow et al. [1]

  

 HEMS

4,989

1.33 (1.16 to 1.57)

 GEMS

8,231

 

Present study (2014)

  

 HEMS

2,090

1.23 (1.02 to 1.49)

 GEMS

22,203

 
  1. aCI: Confidence interval; GEMS: Ground emergency medical services; HEMS: Helicopter emergency medical services; OR: Odds ratio. Modification of Table 1 in Galvagno et al. [11].
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